Locomotive



Nov, 13 1923. 1,

w. W. SLOANE LOCOMOTIVE Filed Sept; 17. 1921 I INVENO/Q )A/ILL/AM. L OA/VE ATTOQ/VEV "r c series,

WILLIM'I W. SLOANE, 033' CHZCAGO, ILL JGIS, .ASSIGNOR T0 GOODMAN IEANUFACTUR- ins ooiaranv, or onions-o, in

JOIS, A GOREQB-ATION 0F ILLINOIS.

LGGOh IOTIVE.

Application filed September To all whom it may concern:

Be it known that l, WILLIAM: V7. SLOANE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have. invented an improvement in Locomotives, of which the following is a specification.

This invention relates to improvements in mine locomotives and more particularly to mine locomotives having a relatively short wheel base. The object of the invention is to provide means for eliminating excessive periodic movement, or teetering of the locomotive frame.

As heretofore constructed, locomotives of the class above described, are subject to a tendency to teeter, or sway forward and backward, while passing over uneven track. This is particularly noticeable in locomotives having a relatively short wheel base, and is largely due to the action of the spring suspension means which allow periodic movements of the locomotive frame when the movement of the springs is unrestricted. This teetering is very objectionable, inasmuch as it causes excessive stress on the springs themselves, interferes with the operation of the locomotive, and often has been sufficient to cause the locomotive to be derailed.

The present invention consists, broadly, in providing a locomotive with a device similar to a shock absorber in connection with th spring suspension means. The invention may best be understood by referring to the drawings illustrating one embodiment of my improved device, in which Figure 1 shows a locomotive having my invention applied thereto. Fig. 2 is an enlarged de tailed cross-section of the shock absorbing); device taken on line 22 of Fig. 1. Fig. 3 is a view in elevation of my improved device viewed from the inside of the locomotive frame.

Referring now to details of the device, the locomotive frame 1 is provided with aplurality of pedestals 2, of any approved design, each adapted to afiord vertical movement of an axle box 3. My improved device is applied to each pedestal, and c0mprises a pair of vertically disposed rods 4:, l, extending upwardly from the axle box and connected at their lower ends to a plate 5 which rests upon the top of the box. A supporting spring 6 of any preferred pattern 17, 1921. Serial No. 501,340.

is interposed betweenthe plate 5 and a stirrup 7 formed integral with the pedestal 52 so as to provide a support for the locomotive frame on the axle box in the usual manner. The rods 4, 4, extend upwardly through the stirrup 7 and each is provided at its upper end with a pair of friction blocks 8, 8. These blocks are preferably provided. with threads which engage on threaded end portions 4 of the rods. Each pair of block is frictionally engaged between inner and outer clamping plates 9 and 10 respectively, both of which are retained between the stirrup 7 and a projection 13 extending laterally from the top of the pedestal 2. The clamping plates 9 and 10 are held under tension by suitable means such as a rod connected at one end to the outer plate 10 and extending through the inner plate 9, and provided with a shoulder such as washer 12. A spring 11 is interposed between said washer and the inner plate 9 as shown in Fig. 2. The tension on the spring: 11 may be re ulated by a nut 12. threaded on the end of the rod 12 and meaning the washer 12".

J11 practice, the tension on the friction )lOPlZS is regulated so as to alford substantially normal resiliency of the locomotive suspension means, but the friction is suflicient to check any excessive movements of the locomotive frame.

I claim as my invention:

1. In combination with a locomotive frame having' guiding means therefor, an axle box, spring suspension moans interposed between said frame and said axle box affording relative vertical movement within said guiding means therebetween, and a friction device independent of said guiding means coacting between said frame and axle box.

2. In combination with a locomotive frame, an axle box, springsuspension means interposed between said frame and said axl box, afiording relative vertical movement therebetwee a friction member carried by one of said movable members and a clamping device carried by the other of said movable members, adapted to engage said friction member.

3. In combination with a locomotive frame, an axle box, a. pedestal having a stirrup, and a projection above said stirrup, spring means interposed between said box and said stirrup, a clamping device interposed between said stirrup and said projection, and means connected with said axle box having frictional engagement with said clamping device. r

4. In combination with a locomotive frame an axle box, a pedestal having a stirru) and a ro'ection above said stirru spring means interposed between said box and said stirrup, a spring pressed clamping device interposed between said stirrup and said projection, and means connected with -=.said axle box having frictional engagemen with; said clamping device. 7

5. In combination with a locomotive V threaded rod, and a pair. offriction blocks each provided with a semi-circular groove threaded to engage opposite sides of said rod, and a clamping device. carried by the other of said movable members adapted to engage the outerfacesof said friction blocks.

Signed at Chicago in the county of Cook and State of Illinois, this 14th day of September, 1921. l V

- WILLIAM. w; sLoANE. V 

